Seal



peripheral edges of draws therefrom an extract which is ob- -is to be understood that this Patented` Nov 5, v1929 PATENT OFFICE WILLIAM G. BOND; 0F .HOLLY OAK, DELAWARE SEAL Application 1ed-March 3, v1928-. ,Serial No. 258,832.

The present invention relates to bottle clo- -sures and has for its principal object the provision ofan inexpensive satisfactory seal.

In bottlijng liquids such as ginger ale for example, culty. has been met in providing closures which are water, acid and alkali proof. Inan attempt to overcome the usual difficulties a metallic cap'has been used which was-crimped over the mouth of the bottle and in which has been placed a disk of cork the which rest on the edge of the container and engage the mouth of the bottle. A diiiculty developed in the use of the cork disk in that the liquid in the container sometimes impregnates the cork and jectionable to the taste and deleterious to the content of the container. Further. the provision of cork disks extending entirely over the mouth of the container adds materially to the cost of production and to the final cost of the article,

Further objects ofthe invention, therefore, are to provide a closure for a container in which the above diiiiculties are overcome and in which the cost of manufacture is decreased below that of any known closure for containers of the above named character.

Still further objects and advantages will appear from the following specifications and will be included in the claims. The invention will be illustrated and described as embodied in a closure for a bottle although'it to be taken as illustrative-and not as limiting the invention to this particular form.

^ erence characters, 10

In the drawings Figure l is a Asection of a cap embodying` the principles of my invention and showing the same as applied to the neck of a bottle. Figure 2 is a bottom plan view of the cap showing the same.

Figure 3 is a view similar Figure 2 but omitting the cork ring.

Referring to the drawings in detail by refdesignates the neck of a bottle towhich is attachied as by being crimped thereon, a cap 11 preferably of sheet metal and cup shaped as usual in caps for embodiment'is ginger ale bottles, the crimps designated by the numeral 12. j

' To effectively prevent seepage past the closure and at the same time -reduce the cost of materials used for this purpose and to .55

eliminate effectively contamination of the liquid, an annular disk 13 of resilient material is provided o f adiameter to fit snugly- Within the cap and to rest on the bottom thereof. The radial section of the ring is of a width to rest upon the upper edge of the definingwalls of the opening of the container and preferably to lie in recessed relation to said opening as shown in Figure 1 of the drawings. With this construction the cut, flat faces of the disk are protected between the cap andthe edge of the defining walls of the opening, leaving only the inner periphery of the disk exposed to the contents of the container. f

The disk may be made ofcork or it may consist of any other suitable material, as a composition of cork extruded with a suitable heat coagulated binder formed by a Well known process which glazes both the inner and outer peripheries which are impervious to and unaected by Water, acid and alkali. This glazed surface designated at 16 in Figure 1 of the drawings, effectively prevents the dissolving all matter from the `disk by the contents of the container of the vdisk and consequently prevents the contamination of the contents. l v

The disk is preferably'secured to the cap bya thin film of cement represented in exaggerated dimensions at 15, and which is just suicient in area to insure against loss of the disk. The portion of the metallic cap exposed by the o ening 14 in the disk is covered b'y afilm o protective material as shown at 17` 90 in Figures '1 and 2 of the drawings, the film being in exaggerated dimensions in Figure' 1` for purposes of illustration. This film y17 extends beyond the inner peripheral edge of the disk as indicated by the dotted line 18A in 95 Figure 2.

sibly be found cheaper Ato coat the entire sheet i an opening therein,

. within said @afp ,posed glazed surface to opening, a cap,

vaction of the contents of the container thereupon and I find` such substances as carnauba Wax and cumar highly satisfactory in thisV connection. Cumar is a synthetic resin made from coal tar naphthas and is preferred because it gives a glossy surface which is water proof, acid proof and alkali proof to a high degree and is highly resistant to the Weather.

It is obvious that various modifications of the use of the above materials may be adopted to suit varied conditionsy and Ido notwish to be limited in the scope of claims.

Having described my invention what I claim is: f

l. In combination with a container having a closure therefor cornprising a cap, a cork disk received in said cap and having a glazed surface presented to the contents of the container.

2. A closure for a container comprising a cap, an annular disk in said cap having a glazed inner periphery.

3. A closure' for a container comprising a capa fibrous disk received within the side Walls thereof and adapted to present an exthe contents of the container, all other surfaces thereof being positioned to be protected either by the container or the cap when the cap is inplace on a container.

4. In combination with a vessel having an an annular disk snugly fitting and adapted to rest on the ning Wall of said opening in opening, a cap,

edge of the de recessed relation to the opening, the inner pe-` riphery of said disk being glazed.

5. In combination with a vessel having an an annular extruded cork disk snugly fitting Within said cap and adapted to rest on the said opening in recessed relation to the opening, the inner periphery of said disk being glazed. I

my inventionD except as I shall be limited by the appended.

portion and crimped side walls, annular edge ofthe defining wall of the surface of the cap exposed by the opening of the disk being coated with cumar.

9. In combination with a container having an opening therein, a closure consisting of a metallic cap having a fiat portion and side Walls at right angles thereto, an annular extruded cork disk snugly litting within the cap having its outer glazed periphery abutting the side Wall, said disk being adapted to rest on the edge of the defining Wall of said opening in recessed relation at all points to saidopening, the inner periphery of the' disk being provided with a glazed surface while the two parallel faces of the disk are cut and therefore'unglazed, a coating of cumar on the ,f portion of the cap exposed by the openingv in tomarla; ensure" extruded cork disk snugly .fitting Within rthe cap having' its outer glazed 'peripheryabut-.V

' disk beingl'adaptcd:

defining wall of the ting the side'` Wall, said to rest on 'the edge ofthe opening in the bottle neck in recessed rela-y tion at all points to said opening, thel inner` periphery of the disk being provided with a glazed surface formed' the hollow c'ork rod from which lthe cork diskis cut, while the the disk are cut and therefore unglazed.`

two' parallel i faces of,l

by the extrudingfof In testimony whereof I aflix my signaturi'e..`

WILLIAM G. BOND.

6. In combination with a vessel having any opening, a cap, within said cap and adapted to rest on the edge of the defining wall of said opening in r recessed relation to the opening, riphery of said disk being glazed, and a liquid impervious coating covering the portion of the cap exposed by the opening in the disk. 7 A closure for containers having the surl face thereof to be exposed to the contents of 4the container covered with 8. A closure for containers comprising a cap having a resilient annularvdlsk therem,

the inner pean annular disk snugly fitting v a film of cumar. r 

